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      1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fblocks -fobjc-arc -emit-llvm -o - %s | FileCheck %s
      2 
      3 // Parameterized classes have no effect on code generation; this test
      4 // mainly verifies that CodeGen doesn't assert when substituted types
      5 // in uses of methods don't line up exactly with the parameterized
      6 // types in the method declarations due to type erasure. "Not crash"
      7 // is the only interesting criteria here.
      8 
      9 @protocol NSObject
     10 @end
     11 
     12 @protocol NSCopying
     13 @end
     14 
     15 __attribute__((objc_root_class))
     16 @interface NSObject <NSObject>
     17 @end
     18 
     19 @interface NSString : NSObject <NSCopying>
     20 @end
     21 
     22 @interface NSMutableArray<T> : NSObject <NSCopying>
     23 @property (copy,nonatomic) T firstObject;
     24 - (void)addObject:(T)object;
     25 - (void)sortWithFunction:(int (*)(T, T))function;
     26 - (void)getObjects:(T __strong *)objects length:(unsigned*)length;
     27 - (T)objectAtIndexedSubscript:(unsigned)index;
     28 - (void)setObject:(T)object atIndexedSubscript:(unsigned)index;
     29 @end
     30 
     31 NSString *getFirstObjectProp(NSMutableArray<NSString *> *array) {
     32   return array.firstObject;
     33 }
     34 
     35 NSString *getFirstObjectMethod(NSMutableArray<NSString *> *array) {
     36   return [array firstObject];
     37 }
     38 
     39 void addObject(NSMutableArray<NSString *> *array, NSString *obj) {
     40   [array addObject: obj];
     41 }
     42 
     43 int compareStrings(NSString *x, NSString *y) { return 0; }
     44 int compareBlocks(NSString * (^x)(NSString *),
     45                   NSString * (^y)(NSString *)) { return 0; }
     46 
     47 void sortTest(NSMutableArray<NSString *> *array,
     48               NSMutableArray<NSString * (^)(NSString *)> *array2) {
     49   [array sortWithFunction: &compareStrings];
     50   [array2 sortWithFunction: &compareBlocks];
     51 }
     52 
     53 void getObjectsTest(NSMutableArray<NSString *> *array) {
     54   NSString * __strong *objects;
     55   unsigned length;
     56   [array getObjects: objects length: &length];
     57 }
     58 
     59 void printMe(NSString *name) { }
     60 
     61 // CHECK-LABEL: define void @blockTest
     62 void blockTest(NSMutableArray<void (^)(void)> *array, NSString *name) {
     63   // CHECK-NOT: ret void
     64   // CHECK: call i8* @objc_retainBlock
     65   [array addObject: ^ { printMe(name); }];
     66   // CHECK-NOT: ret void
     67   array[0] = ^ { printMe(name); };
     68   // CHECK: call i8* @objc_retainBlock
     69   // CHECK: ret void
     70 }
     71